Paper/patches/server/0949-Use-array-for-gamerule-storage.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Paul Sauve <paul@technove.co>
Date: Sun, 9 May 2021 16:49:49 -0500
Subject: [PATCH] Use array for gamerule storage
diff --git a/src/main/java/net/minecraft/world/level/GameRules.java b/src/main/java/net/minecraft/world/level/GameRules.java
index edd2c9d0cf5a81c779011cb4215d496a8987b784..6fa00d9239546aa82b9e92e25a33103868084c38 100644
--- a/src/main/java/net/minecraft/world/level/GameRules.java
+++ b/src/main/java/net/minecraft/world/level/GameRules.java
@@ -100,6 +100,7 @@ public class GameRules {
public static final GameRules.Key<GameRules.BooleanValue> RULE_GLOBAL_SOUND_EVENTS = GameRules.register("globalSoundEvents", GameRules.Category.MISC, GameRules.BooleanValue.create(true));
public static final GameRules.Key<GameRules.BooleanValue> RULE_DO_VINES_SPREAD = GameRules.register("doVinesSpread", GameRules.Category.UPDATES, GameRules.BooleanValue.create(true));
private final Map<GameRules.Key<?>, GameRules.Value<?>> rules;
+ private final GameRules.Value<?>[] gameruleArray; // Paper
private static <T extends GameRules.Value<T>> GameRules.Key<T> register(String name, GameRules.Category category, GameRules.Type<T> type) {
GameRules.Key<T> gamerules_gamerulekey = new GameRules.Key<>(name, category);
@@ -118,17 +119,30 @@ public class GameRules {
}
public GameRules() {
- this.rules = (Map) GameRules.GAME_RULE_TYPES.entrySet().stream().collect(ImmutableMap.toImmutableMap(Entry::getKey, (entry) -> {
+ // Paper start - use this to ensure gameruleArray is initialized
+ this((Map) GameRules.GAME_RULE_TYPES.entrySet().stream().collect(ImmutableMap.toImmutableMap(Entry::getKey, (entry) -> {
return ((GameRules.Type) entry.getValue()).createRule();
- }));
+ })));
+ // Paper end
}
private GameRules(Map<GameRules.Key<?>, GameRules.Value<?>> rules) {
this.rules = rules;
+
+ // Paper start
+ int arraySize = rules.keySet().stream().mapToInt(key -> key.gameRuleIndex).max().orElse(-1) + 1;
+ GameRules.Value<?>[] values = new GameRules.Value[arraySize];
+
+ for (Entry<GameRules.Key<?>, GameRules.Value<?>> entry : rules.entrySet()) {
+ values[entry.getKey().gameRuleIndex] = entry.getValue();
+ }
+
+ this.gameruleArray = values;
+ // Paper end
}
public <T extends GameRules.Value<T>> T getRule(GameRules.Key<T> key) {
- return (T) this.rules.get(key); // CraftBukkit - decompile error
+ return key == null ? null : (T) this.gameruleArray[key.gameRuleIndex]; // Paper
}
public CompoundTag createTag() {
@@ -187,6 +201,10 @@ public class GameRules {
}
public static final class Key<T extends GameRules.Value<T>> {
+ // Paper start
+ private static int lastGameRuleIndex = 0;
+ public final int gameRuleIndex = lastGameRuleIndex++;
+ // Paper end
final String id;
private final GameRules.Category category;